How do I set file selection is JFileChooser?

Hi, I am using an instance of JFIleChooser to allow the user to choose files both for opening and saving. Here's my question.
I want to allow the user to SEE all file formats but only to OPEN or save in .odt or .sxw. I tried this by setting the FileFormat and by setting the ChoosableFileFormat, but they only set what is SEEN, not what can be OPENED or saved.
For instance, the user can type in *.* and that allows them to SEE everything, but I don't what that to allow them to OPEN everything.
Can someone please help me?
Thanks,
Daniel Lorimer

Override the approveSelection() method; only if you allow the user to select a file would you call super.approveSelection(). But why do you want to show the user files -- in a tool designed for selecting a file -- that they can't select?

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